Page last updated: 2024-09-21

methylthioinosine

Description

Methylthioinosine: 6-(Methylthio)-9-beta-D-ribofuranosylpurine. An analog of inosine with a methylthio group replacing the hydroxyl group in the 6-position. [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

Cross-References

ID SourceID
PubMed CID9570
CHEMBL ID388931
CHEBI ID44081
SCHEMBL ID672035
MeSH IDM0013668

Synonyms (49)

Synonym
methylthioinosine
me6mpr
342-69-8
6-methylmercaptopurine riboside
6-methyl mp-riboside
6-methyl mp riboside
6-mmpr
mmpr
6-(methylthio)purine ribonucleoside
(2r,3s,4r,5r)-2-(hydroxymethyl)-5-(6-methylsulfanylpurin-9-yl)tetrahydrofuran-3,4-diol
9h-purine, 6-(methylthio-9-beta-d-ribofuranosyl-
einecs 206-442-2
ai3-50295
brn 0042871
9h-purine, 6-(methylthio)-9beta-d-ribofuranosyl-
inosine, 6-s-methyl-6-thio-
beta-d-ribosyl-6-methylthiopurine
9h-purine, 6-(methylthio)-9-beta-d-ribofuranosyl-, dihydrate
9h-purine, 6-(methylthio)-9-beta-d-ribofuranosyl-
6-(methylthio)-9-beta-d-ribofuranosyl-9h-purine
9-beta-d-ribofuranosyl-6-methylthiopurine
2-hydroxymethyl-5-(6-methylsulfanyl-purin-9-yl)-tetrahydro-furan-3,4-diol
6-methylthiopurine riboside
6-methyl-9-ribofuranosylpurine-6-thiol
6-methylmercaptopurine ribonucleoside
6-methylmercaptopurine-riboside
DB02896
6-s-methyl-6-thioinosine
methylmercaptopurine riboside
chebi:44081 ,
CHEMBL388931 ,
(2r,3s,4r,5r)-2-(hydroxymethyl)-5-(6-methylsulfanylpurin-9-yl)oxolane-3,4-diol
(2r,3s,4r,5r)-2-(hydroxymethyl)-5-[6-(methylsulfanyl)-9h-purin-9-yl]oxolane-3,4-diol
6-(methylsulfanyl)-9-beta-d-ribofuranosyl-9h-purine
bdbm50412071
4-26-00-01992 (beilstein handbook reference)
unii-y5g39shr0v
y5g39shr0v ,
sq-21977
SCHEMBL672035
mfcd00022826
DTXSID5030454
AKOS027320756
(2r,3s,4r,5r)-2-(hydroxymethyl)-5-(6-(methylthio)-9h-purin-9-yl)tetrahydrofuran-3,4-diol
s-methyl-6-thioinosine
ZDRFDHHANOYUTE-IOSLPCCCSA-N
6-methylmercapto-9-(beta-d-ribofuranosyl) purine
Q27093868
BS-28037

Research Excerpts

Overview

ExcerptReference
"Methylthioinosine (MeSno) is a purine nucleoside analog which is cytotoxic to a number of cultured cell lines including the Reuber H35 hepatoma cells used in the present studies. "( Koontz, JW; Wicks, WD, 1984)

Drug Classes (2)

ClassDescription
purine ribonucleosideA ribonucleoside that has a purine moiety as the nucleobase (the R group in the illustration).
thiopurine
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Protein Targets (3)

Inhibition Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
Adenosine kinaseMycobacterium tuberculosis H37RvIC50 (µMol)2.30001.20003.83338.0000AID1596006
Equilibrative nucleoside transporter 1Homo sapiens (human)IC50 (µMol)229.08700.00013.688363.0000AID330912
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Activation Measurements

ProteinTaxonomyMeasurementAverageMin (ref.)Avg (ref.)Max (ref.)Bioassay(s)
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Biological Processes (26)

Processvia Protein(s)Taxonomy
neurotransmitter uptakeEquilibrative nucleoside transporter 1Homo sapiens (human)
nucleobase-containing compound metabolic processEquilibrative nucleoside transporter 1Homo sapiens (human)
xenobiotic metabolic processEquilibrative nucleoside transporter 1Homo sapiens (human)
neurotransmitter transportEquilibrative nucleoside transporter 1Homo sapiens (human)
xenobiotic transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
lactationEquilibrative nucleoside transporter 1Homo sapiens (human)
nucleobase transportEquilibrative nucleoside transporter 1Homo sapiens (human)
adenine transportEquilibrative nucleoside transporter 1Homo sapiens (human)
nucleoside transportEquilibrative nucleoside transporter 1Homo sapiens (human)
purine nucleoside transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
cytidine transportEquilibrative nucleoside transporter 1Homo sapiens (human)
uridine transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
adenosine transportEquilibrative nucleoside transporter 1Homo sapiens (human)
inosine transportEquilibrative nucleoside transporter 1Homo sapiens (human)
hypoxanthine transportEquilibrative nucleoside transporter 1Homo sapiens (human)
thymine transportEquilibrative nucleoside transporter 1Homo sapiens (human)
excitatory postsynaptic potentialEquilibrative nucleoside transporter 1Homo sapiens (human)
cellular response to glucose stimulusEquilibrative nucleoside transporter 1Homo sapiens (human)
cellular response to hypoxiaEquilibrative nucleoside transporter 1Homo sapiens (human)
pyrimidine-containing compound transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
transport across blood-brain barrierEquilibrative nucleoside transporter 1Homo sapiens (human)
nucleoside transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
guanine transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
uracil transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
pyrimidine nucleobase transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
purine nucleobase transmembrane transportEquilibrative nucleoside transporter 1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Molecular Functions (9)

Processvia Protein(s)Taxonomy
neurotransmitter transmembrane transporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
nucleoside transmembrane transporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
adenine transmembrane transporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
guanine transmembrane transporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
uracil transmembrane transporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
purine nucleoside transmembrane transporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
cytidine transmembrane transporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
uridine transmembrane transporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
pyrimidine- and adenosine-specific:sodium symporter activityEquilibrative nucleoside transporter 1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Ceullar Components (6)

Processvia Protein(s)Taxonomy
plasma membraneEquilibrative nucleoside transporter 1Homo sapiens (human)
membraneEquilibrative nucleoside transporter 1Homo sapiens (human)
basolateral plasma membraneEquilibrative nucleoside transporter 1Homo sapiens (human)
apical plasma membraneEquilibrative nucleoside transporter 1Homo sapiens (human)
presynapseEquilibrative nucleoside transporter 1Homo sapiens (human)
postsynapseEquilibrative nucleoside transporter 1Homo sapiens (human)
plasma membraneEquilibrative nucleoside transporter 1Homo sapiens (human)
[Information is prepared from geneontology information from the June-17-2024 release]

Bioassays (30)

Assay IDTitleYearJournalArticle
AID584550Cytotoxicity against mouse J774A1 cells2010Antimicrobial agents and chemotherapy, Dec, Volume: 54, Issue:12
Testing nucleoside analogues as inhibitors of Bacillus anthracis spore germination in vitro and in macrophage cell culture.
AID217260In vitro antiviral activity against vaccinia(VV) virus was determined in african green monkey kidney (vero,V) expressed as virus rating. Toxic level(320 ug/mL)1982Journal of medicinal chemistry, Nov, Volume: 25, Issue:11
Synthesis and antiviral activity of certain carbamoylpyrrolopyrimidine and pyrazolopyrimidine nucleosides.
AID70684Inhibition of Cellular Replication of friend erythroleukemia cells1985Journal of medicinal chemistry, Oct, Volume: 28, Issue:10
Purine and 8-substituted purine arabinofuranosyl and ribofuranosyl nucleoside derivatives as potential inducers of the differentiation of the Friend erythroleukemia.
AID70559Percent benzidine-positive cell differentiation in friend erythroleukemia cells1985Journal of medicinal chemistry, Oct, Volume: 28, Issue:10
Purine and 8-substituted purine arabinofuranosyl and ribofuranosyl nucleoside derivatives as potential inducers of the differentiation of the Friend erythroleukemia.
AID85703In vitro antiviral activity in secondary cultures of rabbit kidney cells infected with HSV type 1 strain HF1984Journal of medicinal chemistry, Nov, Volume: 27, Issue:11
Synthesis and antiviral activity of carbocyclic analogues of 2'-deoxyribofuranosides of 2-amino-6-substituted-purines and of 2-amino-6-substituted-8-azapurines.
AID155596Virus rating against parainfluenza virus type 31989Journal of medicinal chemistry, Apr, Volume: 32, Issue:4
Analysis of the in vitro antiviral activity of certain ribonucleosides against parainfluenza virus using a novel computer aided receptor modeling procedure.
AID491531Binding affinity to Mycobacterium tuberculosis purine nucleoside phosphorylase by spectrophotometric analysis2010Bioorganic & medicinal chemistry, Jul-01, Volume: 18, Issue:13
Crystallographic and docking studies of purine nucleoside phosphorylase from Mycobacterium tuberculosis.
AID19424Partition coefficient (logD7.4)2001Journal of medicinal chemistry, Jul-19, Volume: 44, Issue:15
ElogD(oct): a tool for lipophilicity determination in drug discovery. 2. Basic and neutral compounds.
AID1540947Cytotoxicity against African green monkey Vero cells assessed as reduction in cell viability measured after 120 hrs by MTT assay
AID66321Inhibition Eimeria tenella growth1982Journal of medicinal chemistry, Jan, Volume: 25, Issue:1
Pyrazolo[3,4-d]pyrimidine ribonucleosides as anticoccidials. 1. Synthesis and activity of some nucleosides of purines and 4-(alkylthio)pyrazolo[3,4-d]pyrimidines.
AID34142Virus rating against adenovirus type 21989Journal of medicinal chemistry, Apr, Volume: 32, Issue:4
Analysis of the in vitro antiviral activity of certain ribonucleosides against parainfluenza virus using a novel computer aided receptor modeling procedure.
AID1540946Antiviral activity against Zika virus PE243 infected in African green monkey Vero cells assessed as reduction in viral replication by measuring viral titer per ml of cells at CC20 incubated for 5 days by standard TCID50 method (Rvb = 6.7 No_unit)
AID584547Antibacterial activity against Bacillus anthracis Sterne 34F2 infected in mouse J774A.1 cells assessed as protection against bacteria-induced cytotoxicity using propidium iodide staining after 3 hrs measured every hours for up to 7 hrs2010Antimicrobial agents and chemotherapy, Dec, Volume: 54, Issue:12
Testing nucleoside analogues as inhibitors of Bacillus anthracis spore germination in vitro and in macrophage cell culture.
AID217966In vitro for antiviral activity in secondary cultures of rabbit kidney cells infected with vaccinia virus1984Journal of medicinal chemistry, Nov, Volume: 27, Issue:11
Synthesis and antiviral activity of carbocyclic analogues of 2'-deoxyribofuranosides of 2-amino-6-substituted-purines and of 2-amino-6-substituted-8-azapurines.
AID27580Partition coefficient (logP)2000Journal of medicinal chemistry, Jul-27, Volume: 43, Issue:15
ElogPoct: a tool for lipophilicity determination in drug discovery.
AID329451Inhibition of inosine and alanine-induced germination of Bacillus anthracis Sterne spore pre-incubated for 15 mins2007The Journal of biological chemistry, Apr-20, Volume: 282, Issue:16
Identification of an in vivo inhibitor of Bacillus anthracis spore germination.
AID217253In vitro antiviral activity against parainfluenza type 3(para 3) virus was determined in african green monkey kidney (vero,V) expressed as virus rating. Toxic level(320 ug/mL)1982Journal of medicinal chemistry, Nov, Volume: 25, Issue:11
Synthesis and antiviral activity of certain carbamoylpyrrolopyrimidine and pyrazolopyrimidine nucleosides.
AID29421Partition coefficient (logP) (HPLC)2000Journal of medicinal chemistry, Jul-27, Volume: 43, Issue:15
ElogPoct: a tool for lipophilicity determination in drug discovery.
AID329453Inhibition of cytopathic effect in Bacillus anthracis Sterne infected mouse RAW264.7 macrophage after 6 hrs by propidium iodide exclusion assay2007The Journal of biological chemistry, Apr-20, Volume: 282, Issue:16
Identification of an in vivo inhibitor of Bacillus anthracis spore germination.
AID330912Binding affinity to ENT1 transporter2008Bioorganic & medicinal chemistry, Apr-01, Volume: 16, Issue:7
Constrained NBMPR analogue synthesis, pharmacophore mapping and 3D-QSAR modeling of equilibrative nucleoside transporter 1 (ENT1) inhibitory activity.
AID19427HPLC capacity factor (k)2000Journal of medicinal chemistry, Jul-27, Volume: 43, Issue:15
ElogPoct: a tool for lipophilicity determination in drug discovery.
AID1596006Inhibition of wild-type N-terminal TEV cleavage site-fused/His-tagged Mycobacterium tuberculosis H37Rv adenosine kinase expressed in Escherichia coli BL21 (DE3) using adenosine as substrate in presence of ATP and PEP by pyruvate kinase-lactate dehydrogena2019Journal of medicinal chemistry, 05-09, Volume: 62, Issue:9
Structure-Guided Drug Design of 6-Substituted Adenosine Analogues as Potent Inhibitors of Mycobacterium tuberculosis Adenosine Kinase.
AID584546Inhibition of inosine/L-alanine-induced Bacillus anthracis Sterne 34F2 spore germination pretreated for 15 mins before inosine/L-alanine challenge2010Antimicrobial agents and chemotherapy, Dec, Volume: 54, Issue:12
Testing nucleoside analogues as inhibitors of Bacillus anthracis spore germination in vitro and in macrophage cell culture.
AID70686Optimum concentration for differentiation of friend erythroleukemia cells1985Journal of medicinal chemistry, Oct, Volume: 28, Issue:10
Purine and 8-substituted purine arabinofuranosyl and ribofuranosyl nucleoside derivatives as potential inducers of the differentiation of the Friend erythroleukemia.
AID217249In vitro antiviral activity against herpes simplex type 1 (HSV-1) virus was determined in african green monkey kidney (vero,V) expressed as virus rating. Toxic level(320 ug/mL)1982Journal of medicinal chemistry, Nov, Volume: 25, Issue:11
Synthesis and antiviral activity of certain carbamoylpyrrolopyrimidine and pyrazolopyrimidine nucleosides.
AID85569Concentration required to inhibit HSV type 1 strain HF induced cytopathogenic affects by 50%1984Journal of medicinal chemistry, Nov, Volume: 27, Issue:11
Synthesis and antiviral activity of carbocyclic analogues of 2'-deoxyribofuranosides of 2-amino-6-substituted-purines and of 2-amino-6-substituted-8-azapurines.
AID217834Concentration required to inhibit vaccinia virus induced cytopathogenic affects by 50%1984Journal of medicinal chemistry, Nov, Volume: 27, Issue:11
Synthesis and antiviral activity of carbocyclic analogues of 2'-deoxyribofuranosides of 2-amino-6-substituted-purines and of 2-amino-6-substituted-8-azapurines.
AID290451Antiviral activity against SARS-CoV Frankfurt1 in Vero E6 cells by plaque reduction assay2007Bioorganic & medicinal chemistry letters, May-01, Volume: 17, Issue:9
Synthesis and biological evaluation of nucleoside analogues having 6-chloropurine as anti-SARS-CoV agents.
AID199875Virus rating against rhinovirus type 1A1989Journal of medicinal chemistry, Apr, Volume: 32, Issue:4
Analysis of the in vitro antiviral activity of certain ribonucleosides against parainfluenza virus using a novel computer aided receptor modeling procedure.
AID87045Virus rating of against herpes simplex virus type 21989Journal of medicinal chemistry, Apr, Volume: 32, Issue:4
Analysis of the in vitro antiviral activity of certain ribonucleosides against parainfluenza virus using a novel computer aided receptor modeling procedure.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research

Studies (117)

TimeframeStudies, This Drug (%)All Drugs %
pre-199048 (41.03)18.7374
1990's26 (22.22)18.2507
2000's17 (14.53)29.6817
2010's20 (17.09)24.3611
2020's6 (5.13)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials7 (5.88%)5.53%
Reviews4 (3.36%)6.00%
Case Studies1 (0.84%)4.05%
Observational1 (0.84%)0.25%
Other106 (89.08%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Research Highlights

Safety/Toxicity (5)

ArticleYear
Evaluation of the maternal and developmental toxicity of 6-methylmercaptopurine riboside in rats.
Reproductive toxicology (Elmsford, N.Y.), Volume: 111
2022
Reversal of 6-mercaptopurine and 6-methylmercaptopurine ribonucleoside cytotoxicity by amidoimidazole carboxamide ribonucleoside in Molt F4 human malignant T-lymphoblasts.
Biochemical pharmacology, Aug-03, Volume: 46, Issue: 3
1993
Reversal of methylmercaptopurine ribonucleoside cytotoxicity by purine ribonucleosides and adenine.
Biochemical pharmacology, Jan-06, Volume: 49, Issue: 1
1995
The importance of methylthio-IMP for methylmercaptopurine ribonucleoside (Me-MPR) cytotoxicity in Molt F4 human malignant T-lymphoblasts.
Biochimica et biophysica acta, Apr-30, Volume: 1181, Issue: 2
1993
Relationship between phosphorylation and cytotoxicity of 2-chloroadenosine and 6-methylmercaptopurine riboside in human cells.
Biochimica et biophysica acta, Apr-10, Volume: 798, Issue: 2
1984
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Bioavailability (1)

ArticleYear
A thiopurine drug inhibits West Nile virus production in cell culture, but not in mice.
PloS one, Volume: 6, Issue: 10
2011
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Dosage (4)

ArticleYear
Proactive Metabolite Testing in Patients on Thiopurine May Yield Long-Term Clinical Benefits in Inflammatory Bowel Disease.
Digestive diseases and sciences, Volume: 68, Issue: 3
2023
[Monitoring of thiopurine methyltransferase and thiopurine metabolites to optimize azathioprine therapy in inflammatory bowel disease].
Gastroenterologia y hepatologia, Volume: 29, Issue: 9
2006
Phase I trial of the combination of 6-methylmercaptopurine riboside and 5-fluorouracil.
Medical oncology and tumor pharmacotherapy, Volume: 5, Issue: 2
1988
6-Methylmercaptopurine riboside resistance in human lymphocytes in the in vivo somatic cell mutation test.
Environmental mutagenesis, Volume: 8, Issue: 3
1986
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Interactions (1)

ArticleYear
Biochemical modulation of tumor cell energy: regression of advanced spontaneous murine breast tumors with a 5-fluorouracil-containing drug combination.
Cancer research, Aug-01, Volume: 52, Issue: 15
1992
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]